Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of manganese dioxide cellulose nanofiber mixed compound

A nanofiber, manganese dioxide technology, applied in chemical instruments and methods, oxidized water/sewage treatment, water pollutants, etc., can solve problems such as reducing the contact area of ​​dyes and decolorizing agents, difficult to recycle decolorizing materials, and reducing decolorization efficiency. , to achieve the effect of good application prospect, high decolorization efficiency and low synthesis cost

Inactive Publication Date: 2016-10-12
石狮市三小福服饰有限公司
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the synthesized manganese dioxide is in the form of powder, which greatly limits its application in engineering: (i) difficult to separate solid and liquid; (ii) difficult to recover decolorized materials; (iii) easy to agglomerate to reduce dye and The contact area of ​​the decolorizing agent reduces the decolorizing efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of manganese dioxide cellulose nanofiber mixed compound
  • Preparation method of manganese dioxide cellulose nanofiber mixed compound
  • Preparation method of manganese dioxide cellulose nanofiber mixed compound

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for preparing manganese dioxide cellulose nanofiber hybrids, comprising the following steps:

[0022] (1) Preparation of nanocellulose

[0023] Cellulose suspension was prepared from waste cotton fiber, and ultrasonic cell pulverizer was used to ultrasonicate for 1 hour at 1000w to prepare cellulose nanofibers;

[0024] (2) Preparation of manganese dioxide / cellulose nanofiber hybrid

[0025] Potassium permanganate: the molar ratio of potassium hydroxide=1:1 prepares alkaline potassium permanganate, dissolves 10mmol alkaline potassium permanganate in 100mL water, and adds 300mL 1wt% cellulose nanofibers thereto; Stir at room temperature 8h, washed with water to remove impurities, and concentrated into a slurry with a solid content of 9.3wt%.

Embodiment 2

[0027] A method for preparing manganese dioxide cellulose nanofiber hybrids, comprising the following steps:

[0028] (1) Preparation of nanocellulose

[0029] Prepare cellulose suspension from bamboo pulp and wood pulp cellulose, and use an ultrasonic cell pulverizer to sonicate at 1000w for 1 hour to prepare cellulose nanofibers;

[0030] (2) Preparation of manganese dioxide / cellulose nanofiber hybrid

[0031] Potassium permanganate: the molar ratio of sodium hydroxide=1:1 prepares basic potassium permanganate, dissolves 10mmol basic potassium permanganate in 100mL water, and adds 300mL 1wt% cellulose nanofibers thereto; Stir at room temperature 8h, washed with water to remove impurities, and concentrated into a slurry with a solid content of 9.3wt%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a material preparation method, specifically a method for preparing manganese dioxide cellulose nanofiber hybrids. Cellulose is prepared into a cellulose suspension, which is prepared into cellulose nanofibers with an ultrasonic cell pulverizer at 1000w for 1 hour; 10mmol alkaline Potassium permanganate was dissolved in 100 mL of water, and 300 mL of 1 wt% cellulose nanofiber was added thereto; stirred at room temperature for 8 hours, washed with water to remove impurities, and concentrated into a slurry. The raw material cellulose of the method has a wide range of sources and is a green and sustainable resource. Manganese dioxide is used to grow on the nanocellulose fiber in situ without adding a reducing agent, and the synthesis cost is low and the process is simple. By adjusting the pH, the manganese dioxide / cellulose nanofiber hybrid can realize the conversion of the adsorption of methylene blue and oxidative decolorization, and the prepared manganese dioxide / cellulose nanofiber hybrid has high decolorization efficiency of methylene blue, and the amount of decolorizing agent used is small . It has good application prospects in industrial wastewater treatment and environmental restoration.

Description

technical field [0001] The invention relates to a material preparation method, in particular to a preparation method of a manganese dioxide cellulose nanofiber hybrid. technical background [0002] It is reported that nearly 7×10 5 tons of dye. Because some dyes have the characteristics of high chroma, high concentration, strong toxicity, refractory degradation, large fluctuation and instability of water quality and quantity, etc., it is difficult to treat dye wastewater. The excessive discharge of dye wastewater not only causes serious environmental pollution, but also poses a threat to human health and even life safety. Therefore, how to efficiently remove dyes from wastewater is an urgent problem to be solved. Although various physical or chemical methods of dye removal such as flocculation, filtration, electrochemical adsorption and photooxidation have been extensively studied. However, a low-energy, low-cost ionic dye decolorization material remains a serious challe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/72
CPCB01J20/24B01J20/06B01J2220/46B01J2220/4806B01J2220/4825C02F1/281C02F1/286C02F1/288C02F1/72C02F2101/308
Inventor 蔡敦作张伟卢灿辉王雅茹
Owner 石狮市三小福服饰有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com